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ext4: error proc entry creation when the fs/ext4 is not correctly created

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When the directory fs/ext4 is not correctly created under proc, the entry
under this directory should not be created.

Signed-off-by: Shen Feng <shen@cn.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
This commit is contained in:
Shen Feng 2008-07-13 21:03:31 -04:00 committed by Theodore Ts'o
parent f795e14073
commit cfbe7e4f5e
1 changed files with 4 additions and 0 deletions
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4
fs/ext4/mballoc.c
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@ -2661,6 +2661,10 @@ static int ext4_mb_init_per_dev_proc(struct super_block *sb)
struct proc_dir_entry *proc; struct proc_dir_entry *proc;
char devname[64]; char devname[64];
if (proc_root_ext4 == NULL) {
sbi->s_mb_proc = NULL;
return -EINVAL;
}
bdevname(sb->s_bdev, devname); bdevname(sb->s_bdev, devname);
sbi->s_mb_proc = proc_mkdir(devname, proc_root_ext4); sbi->s_mb_proc = proc_mkdir(devname, proc_root_ext4);